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Oracle 1Z1-921 Exam Syllabus Topics:

Oracle MySQL 2021 Implementation Essentials Sample Questions:

1. Which best describes database horizontal scale-out architecture deployment in MySQL in a read-heavy environment?

A) Increasing the memory capacity so that there is a larger pooling buffer to increase the database read performance.
B) Allocating more CPU to the database instance to improve throughput performance.
C) Deploy MySQL read-only slaves utilizing replication so that the slaves can be used for reads.
D) Increasing the storage capacity so that the database can store more data to scale.
E) Adding more MySQL servers and sharing the same dacadir on a shared storage component like NFS.

2. MySQL Enterprise Masking and De-identification can hide or obfuscate sensitive data, by controlling how the data appears. Which three are MySQL Enterprise Masking and De-identification functions?

A) misspelling
B) random data substitution
C) strict or relaxed masking
D) dictionary substitution
E) whitelisting and substitution

3. Which query will find rows in a table that have no counterpart in another table?

A) SELECT t1.name, t2.name2FROM employee t1 INNER JOIN info t2 WHERE t1.name=t2.name;
B) SELECT left_tbl.*FROM left_tbl LEFT JOIN right_tbl ON left_tbl.id=right_tbl.idWHERE right_tbl.id IS NULL;
C) SELECT t1.name, t2.name2FROM employee AS t1 INNER JOIN info AS t2 ON t1.name= t2.name2;
D) SELECT *FROM table1 INNER JOIN table2 ON table1.id=table2.id WHERE table1.id=! table2.id;

4. After installing MySQL 8.0, you initialize the data directory with the --initialize command. Which two are places where you can find the root password?

A) The root_pw variable stored in the mysq1.install table.
B) The root password inserted in the error log set by the --log-error=[file_name] variable
C) As root, execute the show password command by using the SHA-256 password encryption plug-in.
D) The root password is not given and is blank. You must manually set the root password.
E) The root password displayed on the screen via a [warning] message.

5. Which three installation options are available for installing the MySQL Enterprise Monitor/Agent on Linux?

A) A script (with an option file) for installing MySQL Enterprise Monitor, Agent, and a MySQL Repository database
B) A CLI-based wizard MySQL Enterprise Monitor, Agent, and a MySQL Repository database
C) A browser-based wizard to remotely deploy the MySQL Monitor Agent
D) A MySQL Enterprise Monitor to remotely deploy the MySQL Monitor Agent
E) A GUI for installing MySQL Enterprise Monitor, Agent, and a MySQL Repository database

Solutions: